The bass-line in this song is very basic and simple.

-Repeat riffs as much as needed.

Intro/Verse
G|----------------||
D|----------------||
A|-7--5--3---1----||
E|----------------||

Pre-Chorus
G|----------------||
D|----------------||
A|-4-6-7-8-6------||
E|----------------||
(It's a orangy sky..)

Chorus
G|----------------||
D|----------------||
A|-2-4-3-4--2-2---||
E|-2---3----2-2---||
(Bye Bye Love..)

Solo
G|----------------||
D|----------------||
A|-2-3-4-5-4-3-2--||
E|----------------||